Mel Gibson

A look at Gibson's career shows a dramatic nosedive, a massively successful global superstar undone by scandal. Gibson had made controversial statements before, but a drunken arrest and an anti-Semitic rant led to him being nearly blacklisted.

Edge Of Darkness won him good reviews this year, but it'll take more than that to make him a star again.

Nicole Kidman

When Nicole Kidman won her Best Actress Oscar for The Hours and stunned audiences in Dogville, the world thought it had finally found its best leading lady.

However, that was 2003, and Kidman's film choices have been mostly disappointing since. She was last seen in Rob Marshall's spectacular disaster, Nine, and her upcoming projects don't have much positive buzz going.

Jim Carrey

Carrey's last live-action superhits came with 2003s Bruce Almighty and 2004s Lemony Snicket's A Series Of Unfortunate Events.

Since then, Carrey -- once the highest paid actor in Hollywood -- has all but faded into obscurity, and despite good reviews for his latest I Love You Phillip Morris, the public just doesn't seem to be responding to him like they used to.

Adam Sandler

A lot of comedians with one standard type of on-screen persona run out of steam, and Sandler -- who admittedly kept his overgrown-kid persona alive and kicking for longer than expected -- is seeing his star fade.

I Now Pronounce You Chuck And Larry, You Don't Mess With The Zohan and his latest, Grown Ups, all performed below expectations.

His serious turn in Funny People got positive reviews, but couldn't really give him the hit he so badly needs.